Kumar had come under severe attack over police's handling of the massive protests in the city in the wake of the brutal gangrape with Chief Minister Sheila Dikshit even demanding his removal.
"I will not give their names just now," he told PTI when asked in an interview to reveal the names of those he claimed to be behind the motivated campaign.
When asked whether any politician was behind it, he said "they are not politicians".
The outgoing Commissioner counts bringing professionalism into his over 80,000-strong force and cracking of a number of high-profile cases including the spot fixing scandal, as his major achievements during his 13-month-long stint as head of the force.
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"No, never. I am not a quitter. I don't believe in running away from situation. So never considered quitting. It was a motivated campaign and it's over," he said when asked whether he contemplated quiting after his removal was demanded by the Chief Minister following the police crackdown on protesters at India Gate and Raj Path.
"It is misconception that we did not handle the (protests) well. Throughout the day we tried to persuade them, we tried to request them to disperse. We fired teargas shells, we fired water canons several times.
"It was a leaderless crowd. Lumpen elements had begun to hijack the entire campaign. So we had to take action...We had no option. When all other options failed, we resorted to cane charge and the crowd melted away," Kumar, who will retire on July 31, said.